Ghostwriter (noun)

A person who writes for another person who is the credited author, typically in a professional context such as politics, business or entertainment.

Origin:

The term "ghostwriter" comes from the practice of writing for someone else under their name, as if the work was written by a ghost. the word was first used in the late 1800s.

Examples:

1. The celebrity's memoir was actually written by a ghostwriter.
2. The politician hired a ghostwriter to help him craft his speeches.
3. The CEO's monthly column in the business magazine was written by a ghostwriter.
4. The best-selling novel was written by a ghostwriter.
5. The ghostwriter was brought on to help the author finish the book.